Tillman also suffered a lung contusion Monday night on an inadvertent helmet hit by teammate Craig Steltz as they tackled Minnesota's Visanthe Shiancoe. Tillman stayed on the ground for several minutes and then was taken off the field on a stretcher.
In the third quarter, Bears rookie Johnny Knox injured his left ankle returning a kickoff and was taken off the field on a cart.
Defensive end Israel Idonije sprained his foot, and Danieal Manning strained his right calf on a kickoff return.
Coach Lovie Smith says he's not sure how long any of the injured players will be out.
Copyright 2009 by The Associated Press